At the moment, I'm utterly devoted to iFanboy -- which at the basic level is just three guys getting together every week to talk about the comics they read. But they've also branched out lately into covering a lot more things on their website.

I have lists of other things, but I like to listen while I'm walking or doing housework or exercising, so since I haven't had a portable player, I haven't done as many.

Most of my noncomics podcasts I get from NPR :).